Follow the instructions on the screen to turn on use of Touch ID or tap Set Up Touch ID Later.

If you turn off the function, tap Continue.

6. Restore iCloud backup

Tap Restore from iCloud Backup.

If you don't have a backup, you need to set up your phone as a new iPhone. If you have an iTunes backup, you need to connect your phone to your computer and follow the instructions on the screen to restore your backup.

Tap the field next to "Apple ID" and key in the username for your Apple ID.

Tap the field next to "Password" and key in the password for your Apple ID.

Tap Next.

Tap Agree.

Tap the required backup and your phone restores the contents of the selected backup. Follow the instructions on the screen to complete the activation.